EP0918465B1 - Liquid fatty component containing composition - Google Patents

Liquid fatty component containing composition Download PDF

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Publication number
EP0918465B1
EP0918465B1 EP97924969A EP97924969A EP0918465B1 EP 0918465 B1 EP0918465 B1 EP 0918465B1 EP 97924969 A EP97924969 A EP 97924969A EP 97924969 A EP97924969 A EP 97924969A EP 0918465 B1 EP0918465 B1 EP 0918465B1
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EP
European Patent Office
Prior art keywords
sterol
sterols
fat
liquid
composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP97924969A
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German (de)
English (en)
French (fr)
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EP0918465A1 (en
Inventor
Heike Ritter
Robert L. K. M. Unilever VAN DE SANDE
Volkmar Unilever Res. MULLER
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Unilever PLC
Unilever NV
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Unilever PLC
Unilever NV
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Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP97924969A priority Critical patent/EP0918465B1/en
Publication of EP0918465A1 publication Critical patent/EP0918465A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS
    • A23D9/00—Other edible oils or fats, e.g. shortenings or cooking oils
    • A23D9/007—Other edible oils or fats, e.g. shortenings or cooking oils characterised by ingredients other than fatty acid triglycerides
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS
    • A23D7/00—Edible oil or fat compositions containing an aqueous phase, e.g. margarines
    • A23D7/005—Edible oil or fat compositions containing an aqueous phase, e.g. margarines characterised by ingredients other than fatty acid triglycerides
    • A23D7/0053—Compositions other than spreads
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS OR COOKING OILS
    • A23D7/00—Edible oil or fat compositions containing an aqueous phase, e.g. margarines
    • A23D7/005—Edible oil or fat compositions containing an aqueous phase, e.g. margarines characterised by ingredients other than fatty acid triglycerides
    • A23D7/0056—Spread compositions
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/60—Salad dressings; Mayonnaise; Ketchup

Definitions

  • the present invention concerns an organogel containing composition, the organogel being largely composed of a liquid fatty component and a mixture of sterols.
  • the organogel of the invention has a firmness larger than that of the liquid fatty component when compared at the same temperature, normally room temperature.
  • the liquid fatty component is herein referred to as liquid fat.
  • Fats are commonly applied in a wide range of consumer products, including food and cosmetic products, and also in technical, non-consumer areas. In many of such applications, it is desired that the product comprising the liquid fat has some structure or firmness, meaning that the product is not as liquid and pourable as the liquid fat itself when comparing at similar conditions.
  • Several methods are used for providing structure, the use of solid fats in addition to the liquid fat being one of the most commonly applied.
  • emulsifiers and/or thickeners and/or gelling agents are applied, so that the non-fatty liquid adds significantly to the firmness of the end product.
  • solid fat is applied for structuring (or giving firmness to a products) for technical and practical reasons, in particular in fat continuous products comprising > 50% of fat, preferably >60% of fat.
  • a combination of solid fat, emulsifiers and thickeners and/or gelling agents is often used.
  • solid fat in particular in food products, there is an increased desire to reduce or even do without the presence of solid fats for various reasons.
  • SAFA saturated fatty acid
  • a method is found to replace part or all of the solid fat in a fat composition composed of solid fat alone or of a mixture of solid and liquid fat, by the use of an organogel as claimed herein.
  • the invention is suitable for the reduction of the structuring material necessary to give firmness to the liquid fat containing composition.
  • Another object of the present invention is to provide a new method for giving firmness to a liquid fat, in particular to a glyceride, without chemical modification.
  • a liquid fat means that the liquid fat is pourable at the temperature its application is envisaged. For most products, and in a preferred embodiment, this means at room temperature (20°C).
  • liquid fats include liquid paraffins and liquid, organic fatty components as often applied in consumer products, for example polyol esters like mono-, di- and triglycerides.
  • the present invention now provides a composition comprising an organogel, the organogel being largely composed of a liquid fatty component, at least one sterol and at least one sterol ester. It is desired that both are present in an amount of at least 1 wt% each, based on the total amount of liquid fat used in the organogel.
  • all liquid fat present in the composition of this invention is formed into an organogel.
  • the organogel comprises at least 75% liquid fat.
  • the composition claimed consists of an organogel composed of a liquid fat, a sterol (or mixture of different sterols) and a sterol ester (or mixture of different sterol esters). In another embodiment, other components are present as well.
  • the composition does not comprise water.
  • the organogel of the present invention can be used in combination with other component, such as solid fat, with water, or combinations thereof, and may comprise any other component commonly applied and depending on the end use desired.
  • no components are used which negatively affect the firmness of the organogel itself.
  • additional measures are taken. As an example, it is desired to used components which reduce the water activity.
  • still solid fat can be present.
  • the amount of solid fat can be reduced by the use of a mixture of sterol composed as envisaged in the present invention.
  • the composition consists of an organogel and solid fat. It is preferred to use solid fat having a low SAFA level, say less than 10%, and a trans fatty acid level of less than 4%, preferably the solid fat being virtually free of trans fatty acids.
  • other components commonly applied in the composition envisaged can be present.
  • a margarine type of product all or part of the solid fat present can be replaced by the organogel, and in addition, other components commonly present in such margarine type products such as solid fat, water, flavours, salt, and the like, can be present.
  • a sterol is a polycyclic alcohol, with at least 24 carbon atoms and at least 4 condensed rings, with a ring size of at least 3 atoms, preferably a ring size in the range of 3-6 atoms.
  • the rings are almost planar ring systems such as found in cholesterol.
  • the hydroxyl groups (or C-O bonds) are positioned in the same plane as the ring system, i.e. equatorial and not axial.
  • Sterol esters are, in this specification, esters of phenolic acids of the sterols defined above.
  • phenolic acids relates to the family of cinnamic acids, of which caffeic acid and ferulic acid are examples. Very good results were obtained when the esterified sterol has a structure highly similar to that of the free sterol applied.
  • the free sterol is a ferulic acid
  • the phenolic acid esterified sterol is a ferulic acid sterol ester.
  • the free sterol or a component of similar chemical structure, and the phenolic acid esterified sterol or a component of similar chemical structure tend to form aggregates when dissolved in the liquid and that these aggregates show a certain level of network formation or even polymerization in the liquid, which is then reflected in a structuring of the liquid.
  • the structuring of the liquid would resemble the formation of a gel known from aqueous gels.
  • suitable combination of sterols and sterol esters selected from the group of phytosterols are oryzanol and sitosterol (often denoted by ⁇ -sitosterol).
  • cholesterol is found to be a suitable component that can provide structure to a liquid fatty component when applied at specific levels in combination with other phytosterols.
  • the sterols applicable for providing structure according to the present invention are components obtainable from natural sources.
  • the sterols and/or sterol esters applied are components which can also be found in nature.
  • oryzanol and sitosterol are present as minor components in many plants. In quite some cases, these are even present in the plants from which triglycerides are obtained.
  • the sterol (ester) components are not present in amounts sufficient to provide structuring in these natural sources, nor are these present in the mole ratios needed for obtaining sufficient structure. Also, in many cases, not all sterols needed for the structuring are present in the plants from which the oils are obtained.
  • one of the objects of the present inventions is to provide a new method for giving firmness to a liquid fat, in particular to an edible glyceride, without chemical modification of any of the ingredients being needed.
  • phytosterols and sterol esters found to be highly suitable for providing hardness to the liquid are selected from the group of phytosterols.
  • the term phytosterol is used to cover the whole group of free phytosterols, phytosterol fatty acid esters and (acylated) phytosterol glucosides.
  • Sitosterol can, for example, be obtained from wood and from refining vegetable oil, and normally comprises also a minor amount of other sterols, like campesterol, stigmasterol, various avenasterols etc.
  • the sterols and/or sterol esters used are highly pure; some impurities can be present, it is considered not to be of concern in particular, when the polarity is relatively low.
  • Oryzanol consist of a mixture of ferulic acid esters of unsaturated triterpene alcohols and is also referred to as gamma-oryzanol. In this invention only the term oryzanol is used.
  • Oryzanol can, for example, be obtained from ricebran, and comprises ferulic acid esters of several phytosterols.
  • Cholesterol is, for obvious health reasons, less desired when the use of in food products is envisaged. For any other of the applications, however, it may be very well applicable. A highly suitable combination, in particular for food products, was found in the use of both oryzanol and sitosterol.
  • the organogel of the invention has a firmness larger than that of the liquid fat when compared at the same temperature, normally room temperature.
  • firmness of the organogel consisting of liquid oil and a mixture of sterol and sterol esters according to the invention has a Stevens 4.4 hardness ("Stevens 4.4" value) of at least 20 grams measured at 20°C.
  • the Stevens hardness St expressed in grams, is determined 1 week after manufacturing the organogel when stored at 5°C and thereafter equilibrated for 24 hours at the temperature as indicated, using a 4.4. mm. diameter cylinder in a Stevens -LFRA Texture Analyzer (ex. Stevens Advanced Weighing Systems, UK) load range 1000 g operated "normal” and set at 10 mm penetration depth and 2.0 mm/s penetration rate.
  • Stevens hardness is for this purpose considered a parameter sufficient to distinguish between the liquid fat and the "structured" liquid fat (the organogel).
  • the mixture of the sterol(s) and sterol ester(s) of the invention are capable of structuring a liquid fat when added to a liquid fat in an amount of at least 1 wt% each, based on the amount of liquid fat.
  • the sterols and sterol esters have a limited solubility in liquid fat, the saturation point depending on the specific components used. In most cases, the amount sufficient for structuring is the level whereby all structure providing sterols and sterol esters are added at a total level equal or preferably, above the saturation point of the solution. In particular, the minimum total amount of sterols (i.e.
  • sterols + sterol esters is at least 2 wt% and preferably 3 wt%, based on the total amount of liquid fat present in the composition.
  • the sterols and sterol esters are dissolved in the liquid fat, and it is believed, without wishing to be bound by theory, that the structuring is obtained by the sterols and sterol esters which are added at a level above the saturation of the solution, meaning that these are the not-dissolved sterols which are believed to provide the structure to the liquid.
  • the molar ratio of sterols and sterol esters has to be in the range of 1:5-5:1, whereby a preference exist for 1:3-3:1, towards almost equal molar ratio's, as it was found that an optimal structuring effect was obtained for providing firmness to a liquid fat, in particular a liquid triglyceride.
  • the liquid fat is overall apolar. Surprisingly, it was found that almost all apolar liquid fats can be given firmness by the use of a combination of a sterol (mixture) and a sterol ester (mixture), which preferably is the ester of the specific sterol (mixture) used.
  • the invention is in particular advantageous in the foods area, so that the use of edible liquid fat and edible sterol(s) and edible sterol ester(s) is preferred.
  • the liquid fat is an edible fat
  • the sterols used is a mixture of phytosterols, preferably oryzanol and sitosterol at a minimum total weight level of 2%, preferably 4%, with a clear optimum at a molar ratio between 3:1 and 1:3, further preferred between 1:2 and 2:1.
  • sitosterol and oryzanol provide significant and sufficient structure to an edible liquid acyl glyceride when both are present in a total amount of at least 2 wt% each, based on the liquid acyl glyceride fat.
  • An optimum in providing hardness to a product was found in the use of oryzanol and sitosterol in about equal molar ratio in combination with the use of a liquid polyol ester, preferably a mono-, di- and/or triacyl glyceride.
  • WO-A-92/19640 discloses the use of a sitostanolester in products such as margarine, cooking oil, butter, mayonnaise, salad dressing, shortening for lowering cholesterol levels in serum.
  • a sitostanolester in products such as margarine, cooking oil, butter, mayonnaise, salad dressing, shortening for lowering cholesterol levels in serum.
  • the use of edible liquid acyl glycerides in particular triacyl glycerides is preferred as the liquid fatty component.
  • suitable triacyl glycerides fats and oils (here used as synonyms) both vegetable and animal fats obtained from natural and synthetic origin can be used.
  • liquid vegetable and/or animal fats obtained from natural sources. It is further preferred that these oils comprise a substantial amount of C14 to C22 glycerides, and further preferred a substantial amount of glycerides having C16-C20 triglycerides.
  • the C-numbers refer to the number of carbon atoms per fatty acid group
  • the liquid fatty compound comprises a substantial amount of saturated acyl glycerides, in particular saturated triglycerides, as the use thereof was found to be beneficial with respect to the hardness of the product. It was observed that a further increased amount of the structuring sterols is desired for compositions comprising high levels of unsaturated acyl glycerides compared to the levels needed for the same degree of structuring. The less unsaturated glycerides were used, the harder the product with a same amount of sterols present. In food products, it may be desired for health reasons, however, to use less saturated glycerides and a higher amount of sterols.
  • the vegetable triglycerides often used in consumer products include those obtained from seeds, beans, fruits and nuts, or parts of these plant materials such as their germs, and are often obtained by mechanical expelling and/or solvent extraction.
  • liquid triglycerides which are in particular suitable for use in the present invention are sunflower oil, rapeseed oil, flax or linseed oil, soybean oil, maizegerm or corn oil, wheatgerm oil, ricebran oil, palm oil, olive oil peanut oil, and the like.
  • oils of animal origin can be used in the present invention, and include those obtained from processing fish, for example, fish oil.
  • Other liquid fats that can be applied in the present invention comprise or consist of sucrose polyol polyesters.
  • the fat applied is a fat which is not liquid at room temperature.
  • liquid fat regards fat which is liquid at the temperature applied.
  • fats can be applied at temperatures higher than room temperature whereby it is still desired that the fat at its application temperature is not liquid, but has some structure.
  • most fats melt at their heating, and also above there melting temperature they can be structured by means of the sterols as presently envisaged within the present invention. It will still be desired to use an amount at or above the level of saturation at the envisaged application temperature.
  • temperature of application of the organogel containing composition is less than 80° C, as it was found that the organogel becomes less stable at temperatures higher than that.
  • a liquid fat or oil of vegetable or animal source is used as indicated above, to which, in addition to the sterols, at least 1 wt% based on the amount of liquid fatty compound used, of monoglycerides is added. It was found that an additional increase of hardness is obtained by the addition of 1% or more, e.g. 2-10% of monoglyceride, or that a reduction of the amount of sterols needed to obtain hardness or viscosity for the liquid fatty compound by the addition of a monoglyceride.
  • the composition according to the present invention can be prepared by the simple dissolution of the sterol(s) in the liquid fat.
  • a composition of significant hardness compared to the liquid itself is obtained by dissolving a phenolic acid ester of a sterol and a sterol by mixing the ingredients and stirring at elevated temperatures.
  • a temperature of more than e.g. 40-50°C, often more than 75°C or 85°C will be sufficient, in some cases 90°C degrees is desired in order to achieve rapid dissolving.
  • the liquid solution can be allowed to cool to, for example, ambient temperature.
  • a very suitable means therefore is a surface scraped cooling device, for example a votator (A-unit).
  • oils and fats having a high amount of unsaturated fatty acid groups are very often pourable at room temperature and therefore less suited for use in products that should have some firmness, such as spreads, dressings, mayonnaise and even squeezable margarines used as vegetable topping, creams, fillings and toppings. Up till now, these oils were treated by which treatment some firmness or hardness was obtained. However, such treatment has the serious disadvantage of saturating the unsaturated fatty acid groups.
  • firmness to a liquid oil or fat can be given by the addition of at least one sterol and at least one sterol ester in an amount of at least 1 wt% each, based on the liquid fat to which firmness is to be given.
  • the organogel is preferably used in consumer goods, such as cosmetic products or food products. Also these products comprising such a composition are part of the invention.
  • the present invention allows to prepare fat based food products in which a dispersion of an organogel is used.
  • the food product comprises fat in the form of a organogel as defined in this application and another (solid) fat.
  • the solubility of oryzanol in sunflower oil defined as the (w/w) concentration that gives a clear solution after a prolonged keeping time at a certain temperature, was established to increase about linearly from ca 2 % at 20 °C to ca 10 % at 90 °C.
  • the total phytosterol concentration is illustrated by the following example:
  • Example III.1 turned out not to have any hardness at the time of measurement.
  • a composition the Stevens hardness was found to be about 20 after 26 days
  • liquid triglyceride oils with a different degree of unsaturation were used in this experiment.
  • the oils used were obtained from: palm olein, olive, ricebran, rapeseed, sunflower and flax or linseed oil.
  • the palm olein stemmed from a dry fractionation at 15 °C.
  • the refined sunflower oil used for the trials described sofar still can contain small amounts of polar matter like di- and monoglycerides and free fatty acids.
  • sterols structuring in purified triacylglycerol refined and winterized sunflower oil was additionally SiO2-column treated at ambient temperature under the following conditions:
  • results show quite significant structuring ability by phytosterols in paraffine oil, propylene glycol, hexane and to a certain extent oleic acid.
  • the organogel was prepared from ultrasitosterol (a sterol obtained from wood pulp), the oryzanol was obtained from Kaukas Oy.
  • Two series were prepared, both prepared by preparing two separate phases, i.e. an aqueous and a fat phase, and combining these phase after a pre-treatment in a C-unit.
  • the pre-treatment of the fat phase encompassed the heating of the fat phase ingredients to 90°C, cooling to 60°C, passing the composition through an A unit so as to rapidly cool down to 15°C.
  • the aqueous phase was prepared by heating the combined ingredients to 60°C, passing it through an A-unit so as to rapidly cool down to 15°C
  • Example XI.A the aqueous phase contained, salt, syrup, or no additives; the concentration of sterol:sterolesters (1:1 m/m) was 5 wt% on the fat phase.
  • Example XI.A encompasses 6 experiments, including 1 reference example. Results are provided in the following table: exp fat + sterols [%] H 2 O [%] NaCl [%] Syrup [%] Stevens after 2 days Stevens after 5 days A.1 84.5 15.5 0 0 70 67 A.2 84.6 12.6 2.77 0 108 125 A.3 82.4 13 4.57 0 100 94 A.4 81.4 7.0 0 11.6 117 122 A.5 81.0 2.7 0 16.4 141 153
  • Example XI.B the aqueous phase contained about 12 % of the total fat content, and so, the aqueous phase was a premix in itself. All sterols were added to the fat phase. Accordingly, the sterol concentration in the fat phase was 5.65%, whereas the sterol concentration based on the total amount of fat in the composition was 5%. To the fat phase, 0.5% Dimodan BP and a minor amount of carotene were added. exp.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Edible Oils And Fats (AREA)
  • Fats And Perfumes (AREA)
  • Steroid Compounds (AREA)
  • Cosmetics (AREA)
EP97924969A 1996-05-10 1997-05-12 Liquid fatty component containing composition Expired - Lifetime EP0918465B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97924969A EP0918465B1 (en) 1996-05-10 1997-05-12 Liquid fatty component containing composition

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP96201303 1996-05-10
EP96201303 1996-05-10
PCT/EP1997/002597 WO1997042830A1 (en) 1996-05-10 1997-05-12 Liquid fatty component containing composition
EP97924969A EP0918465B1 (en) 1996-05-10 1997-05-12 Liquid fatty component containing composition

Publications (2)

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EP0918465A1 EP0918465A1 (en) 1999-06-02
EP0918465B1 true EP0918465B1 (en) 2005-01-12

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US (1) US6846507B1 (cs)
EP (1) EP0918465B1 (cs)
AU (1) AU767968B2 (cs)
CA (1) CA2253855C (cs)
CZ (1) CZ291214B6 (cs)
DE (1) DE69732239T2 (cs)
EA (1) EA001326B1 (cs)
ES (1) ES2235233T3 (cs)
PL (1) PL185952B1 (cs)
SK (1) SK284128B6 (cs)
WO (1) WO1997042830A1 (cs)

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EA001326B1 (ru) 2001-02-26
US6846507B1 (en) 2005-01-25
CA2253855A1 (en) 1997-11-20
PL329763A1 (en) 1999-04-12
DE69732239D1 (de) 2005-02-17
SK284128B6 (sk) 2004-09-08
PL185952B1 (pl) 2003-09-30
CA2253855C (en) 2003-02-11
CZ291214B6 (cs) 2003-01-15
SK153798A3 (en) 1999-04-13
ES2235233T3 (es) 2005-07-01
EP0918465A1 (en) 1999-06-02
EA199800996A1 (ru) 1999-04-29
DE69732239T2 (de) 2005-12-22
AU767968B2 (en) 2003-11-27
WO1997042830A1 (en) 1997-11-20
CZ364298A3 (cs) 1999-06-16

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